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The whole appeal of a BANISH 45 or 46 is that it isn't locked to a single gun, and this 4793 piston is a big part of how that works. It's the threaded rear component that mates the suppressor to your barrel, machined with 9/16×24 right-hand threads so it lines up with hosts cut to that pattern in .45 ACP. Instead of buying a dedicated can for every platform, you keep one suppressor and match the thread by dropping in the right piston.
The piston seats inside the suppressor's rear as part of the Nielsen device (also called a booster). On tilt-barrel pistols, the piston rides on a spring that lets the can move slightly during recoil so the action cycles reliably. If you're running a fixed-barrel host like a PCC or subgun, you pull the spring and drop in a fixed barrel spacer instead, since those barrels don't need the booster to function. Getting the thread pitch and the tilt-versus-fixed setup right is what makes the mount work cleanly, so it's worth confirming your barrel threads before you order.
BANISH machines these pistons from heat-treated steel finished in a bronze coating, which holds up to the heat, pressure, and residue that come with regular suppressor use. Each piston is engraved with the thread diameter, pitch, and direction so there's no guesswork when you're swapping between guns at the bench or the range. The 4793 measures right around 2.95 inches and drops in without any special tools.
If you've already got a BANISH 45 or 46, adding the 9/16×24 piston is the easy way to run it on another .45 ACP host without a second tax stamp and wait. It's a small part that quietly does a lot, and it's the piece that keeps a modular suppressor living up to the name.
The 4793 piston is the threaded rear component that connects your BANISH 45 or 46 suppressor to a barrel cut with 9/16×24 right-hand threads. It sits inside the suppressor's Nielsen device and provides the mounting interface for a .45 ACP host. Swapping pistons is how one modular can serves multiple firearms.
Yes, but you'll need to remove the booster spring and install a fixed barrel spacer in its place, since fixed barrels don't move during firing. On a tilt-barrel pistol you keep the spring so the can can travel and let the action cycle. The fixed barrel spacer is sold separately from this piston.
The piston has to match your barrel's threads exactly, so check the thread pitch stamped on or listed for your threaded barrel. This 4793 is 9/16×24 right-hand, which shows up on some .45 ACP hosts. If your barrel uses a different pitch, Banish offers pistons in other thread patterns.
Yes. This piston is made for the BANISH 45/46 modular suppressor family and installs the same way in either. No special tools are needed to swap it in and out.
| UPC | 810171221438 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 100000310933 |
| Caliber/Gauge | .45 ACP |
| Color | BRONZE |
| Length | 2.9500 |
| Model | |
| Package Height | 1.5 |
| Package Width | 3.0 |
| Product Type | Accessory-Silencer Accessories |
| Shipping Weight | 0.097 |
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